Operation; Mode Button Functions - Extech Instruments CO10 User Manual

Operation

MEASUREMENTS
IMPORTANT: Ensure that the meter is turned on in an area free of CO. If not, the
meter will read incorrectly when subsequently measuring CO.
Press the ON/OFF button to turn the meter on.
1.
Allow time for the meter to perform the self test and for the
display to settle.
2. To use the meter, trace the CO10 around the area of the
suspected leak.
3. The meter will indicate the presence of CO (in ppm) on the LCD display. An audible
beep will sound at 35 ppm alerting the user that the threshold of dangerous CO levels
has been detected. The higher the concentration of CO, the faster the beeper will
sound. Above 200PPM the beeper will sound continuously.
4. To turn the meter off, press the ON/OFF key. If the meter is left on, the meter will
automatically power off after 15 minutes.

MODE Button Functions

Press the MODE button to step through the following functions..
1. Maximum Data Mode: Displays the highest reading taken.
This reading is cleared when the meter is powered off.
2. Recall Data Mode: Press the SEL button to step through and
recall the data from the 10 memory locations. The current
memory location (0-9) is displayed in the top right.
3. Store Data Mode: In this mode, you can store the reading to
the next available memory location by pressing the SEL
button. "REC" is displayed in the top right.
4. Recall Alarm Mode: The meter will display the alarm level
data setting ─"30ppm".
Zero Mode: Press the SEL button for over 8 seconds to enter
the manual zero adjusting mode. The zero value will blink and
then the display will 0 and the meter will return to the
Measure Mode.
5. Measuring Time Mode/Auto Power Off disable: This mode
will display how long the meter has been on taking
measurements. The time is cleared when the meter is
powered off. The auto power off function is disabled in this
mode. In all other modes, auto power off is enabled and will power off after 15
minutes of inactivity.
6. Audible Alarm Enable/Disable:The audible alarm can be
turned on/off by pressing the SEL button. "on" or "off" will be
displayed on the LCD. The alarm light will remain enabled in
either setting.
Backlight In the measure mode press and hold the SEL button for 4 seconds to turn the
backlight on/off. Press the MODE button to enter maximum data mode.
3
REC
MAX
MEM
REC
Time
PPM
CO10 V2.0 10/05